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Old May 19th 11, 09:17 PM posted to rec.radio.amateur.antenna
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Default Transmitter Output Impedance

On 19 mayo, 20:38, Cecil Moore wrote:
On May 19, 11:59*am, Wimpie wrote:

I have a source 100Vp, 4 MHz, sinusoidal, in series with a capacitance
of 796 pF (that is a capacitive reactance of 50 Ohms).


:-) I saw a similar example over a half-century ago - a zero ohm
source that is 100% efficient no matter what the load. A conjugate
match provides enough power to destroy the universe. Question is: If a
source impedance is a pure reactance, can it deliver any power?
--
73, Cecil, w5dxp.com


Cecil,

Just solve this source brainteaser (that contains the capacitor) with
the principles outlined in a reference provided by you. Efficiency is
not of importance here, so please don't lure us into new non-relevant
issues.

Though its seems just theoretically, I source providing 100W at 4 MHz
with Zout is = 1 ohm (or less) can be made with today's components.

Wim
PA3DJS
www.tetech.nl


 
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